Ribose and deoxyribose are constituents of the nucleic acids RNA and DNA.核糖与脱氧核糖分别是核糖核酸与脱氧核酸(DNA)的结构成分.The sugar in all the nucleotides of DNA is deoxyribose.所有DNA的核苷酸中的糖均是脱氧核糖.Deoxyribose A pentose ( five - carbon ) sug...
We have a very communicative approach to teaching languages.我们在语言教学中非常强调交际教学法。They will concentrate on teaching the basics of reading, writing and arithmetic.他们将集中教授阅读、写作和算术基础知识。Encouraging teacher transfer would not, by...
道路一旁陡降的坡面a precipitous drop at the side of the road自天而降的一阵寂寞冷落的清寒,引来了一天的黎明.The dawns were heralded by the descent of a chill stillness.他撩开窗帘,向初降的暮色中望去.Parting the curtains he looked out into the early dusk....
The tree grew from a small acorn.橡树从一粒小橡子生长而来.To see the problem here more clearly, let's look at a different biological system, say, an acorn...为更清晰地理解此处的问题,我们来看一种不同的生物系统,比如说,橡子。The oak is implicit in the acorn.橡树孕...